(With the rapid development of computer and software engineering, new concepts, terms and technical means emerge in endlessly, which can be described as changing with each passing day. There are many concepts and terms in the scope of software performance testing, such as concurrency testing, stress testing, benchmark testing, test scenarios, etc., which dazzle novices who have just come into contact with performance testing. However, if we can go deep into the essence of software performance testing, look at the problem from a philosophical point of view, and find out its internal relations, such as causal relationship, form content relationship, and even overlapping relationship, after clarifying our ideas, software performance testing will be more than a walking horse. Here is a good tutorial for you to share)